Oscar Pistorius, leaves the high court in Pretoria, South Africa (Picture: AP)

Oscar Pistorius wailed and sobbed in court today as he was accused of ‘concocting’ stories about the night his girlfriend was shot dead.

Shortly before the murder trial adjourned for the day, chief prosecutor Gerrie Nel said: ‘You’re getting emotional now because you’re getting frustrated because your version [of events] is improbable. You’re not using your emotional state as an escape, are you?’

Pistorius, accused of deliberately firing his 9mm pistol at Reeva Steenkamp, broke down crying four times.

He wept when he was asked to repeat the order to leave that he says he shouted to the ‘intruder’ before firing through the toilet door of his home.

Pistorius sobbed and wailed again when Mr Nel insisted that he knew he was firing at his girlfriend.

Murder scene: Bullet holes in the toilet door (Picture: Getty)

Mr Nel says she was hiding from him after they had a bitter argument in the early hours of February 14 last year.

‘I did not fire at Reeva,’ wailed Pistorius as the judge announced the day’s second unscheduled break. After the judge left the courtroom, Pistorius stood sobbing with his body trembling and turned away from the gallery.

Mr Nel again accused Pistorius of tailoring his version to fit evidence at the scene. Mr Nel, nicknamed ‘bulldog’, listed alleged inconsistencies in Pistorius’s account and told him he had ‘concocted’ his version of the shooting.

‘You’re tailoring your version as you’re sitting there,’ Mr Nel said.

Mr Nel alleged the Olympic runner lowered his aim with his 9mm pistol to ensure he hit Ms Steenkamp, 29, as she fell back against a magazine rack.

Pistorius, 27, who denies murder, faces more questions about the toilet cubicle tomorrow when the case continues.